The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 2003
Filed:
Jul. 30, 2001
Michael L. Bullock, San Diego, CA (US);
Brian Helterline, Salem, OR (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
The present invention deals with a replaceable printing component for an ink-jet printing system. The ink-jet printing system is of the type having at least one replaceable component. The replaceable component includes an electrical storage device that is responsive to printing system control signals for transferring information between the printing component and the ink-jet printing system. The replaceable printing component includes a non-protected and a protected electrical storage portion. The non-protected electrical storage portion is responsive to write control signals for storing information provided to the non-protected electrical storage portion. The protected electrical storage portion has a protected state in response to an occurrence of a write protect active signal. In the protected state the protected electrical storage device prevents storage of information in the protected electrical storage portion. Both the protected and non-protected electrical storage portions are responsive to read control signals for transferring information stored in the protected and non-protected electrical storage portions, respectively, to the ink-jet printing system.